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This Hydronic 5 is a 17,000 btu - 12 volt engine coolant heater used to preheat engines up the 14 Liters. Installed in a typical Class 8 truck engine, the Hydronic 5 will raise the engine coolant 100 degrees in about one hour. This kit includes the 7 day timer and boxed version.

This Hydronic 5 is a 17,000 btu - 12 volt engine coolant heater used to preheat engines up the 14 Liters. Installed in a typical Class 8 truck engine, the Hydronic 5 will raise the engine coolant 100 degrees in about one hour. This kit is a boxed version.